Hadronic decays from the lattice
| dc.creator | UKQCD Collaboration | |
| dc.creator | Michael, C. | |
| dc.creator | McNeile, C. | |
| dc.date | 2003-09-15 | |
| dc.date.accessioned | 2026-07-07T11:43:16Z | |
| dc.date.available | 2026-07-07T11:43:16Z | |
| dc.description | We discuss strategies to determine hadronic decay couplings from lattice studies. As an application, we explore the decay of a vector meson to two pseudoscalar mesons with $N_f=2$ flavours of sea quark. Although we are working with quark masses that do not allow a physical decay, we show how the transition rate can be evaluated from the amplitude for $ρ\to ππ$ and from the annihilation component of $ππ\to ππ$. We explore the decay amplitude for two different pion momenta and find consistent results. The coupling strength we find is in agreement with experiment. We also find evidence for a shift in the $ρ$ mass caused by mixing with two pion states. | |
| dc.description | Proc. Latt03 (spectrum), 3 pages, 4 figs | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0309073 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0309073 | |
| dc.identifier | Nucl.Phys.Proc.Suppl.129:215-217,2004 | |
| dc.identifier | doi:10.1016/S0920-5632(03)02534-9 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/201179 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Hadronic decays from the lattice | |
| dc.type | text |